Force on Parallel Wires: the Figure Shows Three Long, Parallel

Multiple Choice

Force on parallel wires: The figure shows three long, parallel, current-carrying wires. The current directions are indicated for currents I₁ and I₃. The arrow labeled F represents the net magnetic force acting on current I₃. The three currents have equal magnitudes. What is the direction of the current I₂?

A) into the picture (in the direction opposite to that of I₁ and I₃)
B) horizontal to the right
C) vertically upward
D) vertically downward
E) out of the picture (in the same direction as I₁ and I₃)